John C. Warren
Abstract
The cosine function is a mapping of real numbers into real numbers. The function is called cos, and the mapping is usually described with reference to a geometric figure that involves a number circle and a number line. (See fig. 1.)
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The cosine function is a mapping of real numbers into real numbers. The function is called cos, and the mapping is usually described with reference to a geometric figure that involves a number circle and a number line. (See fig. 1.)
Key concepts: Trigonometric functions, Function (biology), Mathematics, Discrete cosine transform, Sine, Line (geometry), Arithmetic, Computer science